Let's take for example the proliferation of competing theories on the topics of the "origin of life" and the “origin of the universe”. All are therefore deemed ludicrous and fallacious because they are created by men and men contradict one another.
You're right, but Raymondo isn't wrong. All theories are ludicrous and fallacious, some moreso than others. Christian theories are more ludicrous than "scientific" theories at this point in history, which explains why most people who still subscribe to the former are either uneducated or indoctrinated as children.
Unfortunately, the latter often suffer serious mental schisms as they attempt to reconcile the theories that they accepted as a child with the theories they learn as adults.
Some say you are "brainwashing" your kids because they do not have the education necessary to question what you teach them. Unfortunately while you instill ancient morals into your children, you aren't teaching them ancient arithmetic, ancient physics, ancient biology, etc. The rest of their rational faculties will develop under modern ("worldly") instruction, at which point they will begin to suffer cognitive dissonance in proportion to their intelligence.
At this point, two outcomes arise:
1. Retain beliefs, continue to suffer.
2. Abandon beliefs, try to reconstruct identity.
Unfortunately, should they choose the latter, they won't have their parents' help. And faced with this challenge, they may take choose to retain their "faith" -- not really "believing", but afraid of the alternative.